java.lang.NoSuchMethodError: org.bukkit.Bukkit.getPlayer(Ljava/util/UUIDLorg/bukkit/entity/Player;
at com.dsh105.echopet.api.pet.Pet.getOwner(Pet.java:94)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.getPlayerOwner(EntityPet.java:127)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.ai.PetGoalFollowOwner.shouldStart(PetGoalFollowOwner.java:66)
at com.dsh105.echopet.compat.api.ai.PetGoalSelector.updateGoals(PetGoalSelector.java:150)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.bm(EntityPet.java:227)
at net.minecraft.server.v1_7_R2.EntityLiving.e(EntityLiving.java:1441)
at net.minecraft.server.v1_7_R2.EntityInsentient.e(EntityInsentient.java:306)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityAgeablePet.e(EntityAgeablePet.java:60)
at net.minecraft.server.v1_7_R2.EntityLiving.h(EntityLiving.java:1304)
at net.minecraft.server.v1_7_R2.EntityInsentient.h(EntityInsentient.java:150)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.h(EntityPet.java:442)
at net.minecraft.server.v1_7_R2.World.entityJoinedWorld(World.java:1345)
at net.minecraft.server.v1_7_R2.World.playerJoinedWorld(World.java:1326)
at net.minecraft.server.v1_7_R2.World.tickEntities(World.java:1214)
at net.minecraft.server.v1_7_R2.WorldServer.tickEntities(WorldServer.java:480)
at net.minecraft.server.v1_7_R2.MinecraftServer.v(MinecraftServer.java:639)
at net.minecraft.server.v1_7_R2.DedicatedServer.v(DedicatedServer.java:250)
at net.minecraft.server.v1_7_R2.MinecraftServer.u(MinecraftServer.java:548)
at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:459)
at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618)

A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Stacktrace:
at com.dsh105.echopet.api.pet.Pet.getOwner(Pet.java:94)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.getPlayerOwner(EntityPet.java:127)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.ai.PetGoalFollowOwner.shouldStart(PetGoalFollowOwner.java:66)
at com.dsh105.echopet.compat.api.ai.PetGoalSelector.updateGoals(PetGoalSelector.java:150)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.bm(EntityPet.java:227)
at net.minecraft.server.v1_7_R2.EntityLiving.e(EntityLiving.java:1441)
at net.minecraft.server.v1_7_R2.EntityInsentient.e(EntityInsentient.java:306)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityAgeablePet.e(EntityAgeablePet.java:60)
at net.minecraft.server.v1_7_R2.EntityLiving.h(EntityLiving.java:1304)
at net.minecraft.server.v1_7_R2.EntityInsentient.h(EntityInsentient.java:150)
at com.dsh105.echopet.compat.nms.v1_7_R2.entity.EntityPet.h(EntityPet.java:442)
at net.minecraft.server.v1_7_R2.World.entityJoinedWorld(World.java:1345)
at net.minecraft.server.v1_7_R2.World.playerJoinedWorld(World.java:1326)